body {
  width: 100%;
  min-width: 320px;
  max-width: 640px;
  margin: 0 auto;
  background: #ffffff;
  font-size: 14px;
  font-family: -apple-system, Helvetica, sans-serif;
  line-height: 1.5;
  color: #666;
}
a {
  color: #666;
  text-decoration: none;
}
img {
  vertical-align: top;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.app {
  height: 45px;
}
.app ul li {
  float: left;
  height: 45px;
  background-color: #333333;
  line-height: 45px;
  color: white;
  text-align: center;
}
.app ul li:nth-child(1) {
  width: 8%;
}
.app ul li:nth-child(1) img {
  width: 10px;
  vertical-align: middle;
}
.app ul li:nth-child(2) {
  width: 10%;
}
.app ul li:nth-child(2) img {
  width: 30px;
  vertical-align: middle;
}
.app ul li:nth-child(3) {
  width: 57%;
  font-size: 14px;
}
.app ul li:nth-child(4) {
  width: 25%;
  background-color: #f63515;
}
.search-wrap {
  position: fixed;
  width: 100%;
  height: 44px;
  overflow: hidden;
  min-width: 320px;
  max-width: 640px;
  z-index: 999;
}
.search-btn::before {
  content: "";
  display: block;
  width: 20px;
  height: 18px;
  margin: 14px 0 0 15px;
  background: url("../img/s-btn.png") no-repeat;
  background-size: 20px 18px;
}
.search-wrap .search-btn {
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 44px;
  /*background-color: pink;*/
}
.search-wrap .search-login {
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 44px;
  /*background-color: pink;*/
  line-height: 44px;
  color: white;
}
.search {
  position: relative;
  height: 30px;
  background-color: white;
  margin: 0 50px;
  border-radius: 15px;
  margin-top: 7px;
}
.search .jd-icon {
  position: absolute;
  width: 20px;
  height: 15px;
  top: 8px;
  left: 13px;
  background-image: url("../img/logo-1.png");
  background-size: 20px 15px;
}
.search .jd-icon::after {
  content: "";
  position: absolute;
  top: 0;
  left: 26px;
  height: 16px;
  width: 1px;
  background-color: #ddd;
}
.search-icon {
  position: absolute;
  left: 30px;
  width: 18px;
  height: 15px;
  background: url("../img/jd-sprites.png") no-repeat;
  background-position: -80px 0;
  background-size: 200px;
  margin: 8px 0 0 15px;
}
.search .text {
  position: absolute;
  top: 7px;
  left: 70px;
  color: #ddd;
  font-size: 12px;
}
.slider img {
  width: 100%;
}
.brand {
  overflow: hidden;
  border-radius: 10px 10px 0 0;
}
.brand div {
  float: left;
  width: 33.33%;
  height: 170px;
}
.brand div:nth-child(1) {
  background-color: pink;
}
.brand div:nth-child(2) {
  background-color: skyblue;
}
.brand div:nth-child(3) {
  background-color: yellowgreen;
}
.brand div img {
  width: 100%;
}
.nav {
  padding-top: 5px;
  text-align: center;
}
.nav a {
  float: left;
  width: 20%;
}
.nav a img {
  width: 40px;
  margin: 10px 0;
}
.nav a span {
  display: block;
}
/*清除浮动*/
.nav:after {
  content: "";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.nav {
  zoom: 1;
}
.news {
  margin-top: 20px;
}
.news a {
  float: left;
  display: block;
  height: 100px;
  box-sizing: border-box;
}
.news a:nth-child(1) {
  background-color: pink;
  width: 50%;
}
.news a:nth-child(2) {
  background-color: skyblue;
  width: 25%;
  border-left: 1px solid #cccccc;
}
.news a:nth-child(3) {
  background-color: yellowgreen;
  width: 25%;
  border-left: 1px solid #cccccc;
}
/*seiper样式*/
.swiper {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;

  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}

.swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
